Page 365 of 521

364 4-3. Do-it-yourself maintenance
CAUTION
■Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charge the 12-volt
battery in a garage or closed room where there is insufficient ventilation.
■ How to recharge the 12-volt battery
Only perform a slow charge (5 A or less). The 12-volt battery may explode if
charged at a quicker rate.
■ Emergency measures regarding electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immedi-
ate medical attention. If possible, continue to apply water with a sponge or
cloth while traveling to the nearest medical facility.
● If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical
attention immediately.
● If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the cloth-
ing and follow the procedure above if necessary.
● If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medical attention
immediately.
NOTICE
■When recharging the 12-volt battery
Never recharge the 12-volt battery while the EV system is operating. Also,
be sure all accessories are turned off.
Page 391 of 521
390 4-3. Do-it-yourself maintenance
12 ABS 130 A Anti-lock brake system
13 ECB 1 50 AElectronically controlled brake sys-
tem
14 ECB 2 50 AElectronically controlled brake sys-
tem
15 W/P-IGCT 50 A P/T W/P, BATT W/P 1, BATT W/P 2
16 EPS 60 A Electric power steering
17 P/I 60 AIGCT-D, HORN, parking control
system, IG2
18 MAIN 60 AH-LP MAIN, DRL, ODS, smart key
system, ABS 2, steering lock sys-
tem, PM-B, ECU-B MAIN
19 CONTACTOR 15 A Traction battery, charging system
20 IG2 15 A Starting system
21
HORN 10 A Horn
22 IGCT-D 7.5 A Thermal control system, power
management ECU, parking control
system, multiplex communication
system
23 PM-IGCT 7.5 A Power management system
24 P CNT-IGCT 7.5 A Parking control system
25 A/C-IGCT 10 A Air conditioning system
26 FAN-IGCT 7.5 A Electric cooling fans
FuseAmpereCircuit
Page 393 of 521
392 4-3. Do-it-yourself maintenance
14 SMART7.5 A Smart key system
15 STRG LOCK 20 A Steering lock system
16 AM2 7.5 A Starting system
17 ABS 2 7.5 A Anti-lock brake system
18 PTC HTR 2 50 A Air conditioning system
19 PTC HTR 1 50 A Air conditioning system
20 PTC HTR 3 50 A Air conditioning system
21 CHARGER 5 A Charging system
22 IGCT 2 20 A THRML CTRL, G/W-IGCT
23 HV BATT 10 A Traction battery
24 PM-B 7.5 A Power management system
25 ODS 7.5 A Occupant classification system
26 HTR 50 A Air conditioning system
27 FAN 1 50 A Electric cooling fans
28 FAN 2 50 A Electric cooling fans
29 H-LP MAIN 40 A H-LP LH-LO, H-LP RH-LO, H-LP
LH-HI, H-LP RH-HI, manual head-
light leveling system, daytime run-
ning light system
30 ECU-B MAIN 30 A ECU-B 2, A/C-B
31 SPARE 5 A Spare fuse
32 SPARE 10 A Spare fuse
33 SPARE 20 A Spare fuse
FuseAmpereCircuit
Page 394 of 521
393
4-3. Do-it-yourself maintenance
4
Maintenance and care
Ty p e C
FuseAmpereCircuit
1 FL J/B 140 A ECU-IG1 2, back-up lights, wind-
shield wipers and washers, rear
window wiper and washer, ECU-
IG1 1, seat heaters, ECU-IG1 3,
power windows, stop lights, OBD,
ACC-MAIN, charging indicator,
DEF, TAIL, power outlets, switch
illumination, instrument panel
lights, gauges and meters, audio
system, air conditioning system
Page 397 of 521
396 4-3. Do-it-yourself maintenance
17 WASHER15 AWindshield washer, rear window
washer
18 ECU-IG1 1 10 A Electronically controlled brake sys-
tem, tire pressure warning system,
air conditioning system, main body
ECU, anti-glare inside rear view
mirror, Vehicle Proximity Notifica-
tion System, navigation system
19 ECU-IG1 2 10 A Emergency flashers, rear window
defogger, air conditioning system
20 OBD 7.5 A On-board diagnosis system
21 STOP 10 AStop/tail lights, high mounted stop-
light
22 CHRG IND 7.5 A Charging indicator
23 DOOR 25 A Power windows
24 ACC-MAIN 25 A ACC-B, P/OUT, DCM
FuseAmpereCircuit
Page 419 of 521

418 5-2. Steps to take in an emergency
Stop the vehicle immediately.The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
Have the vehicle inspected by your Toyota dealer immediately.Failure to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details
12-volt battery chargi ng system warning light
Indicates a malfunction in the vehicle’s 12-volt battery
charging system.
Warning lightWarning light/Details
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
“ABS” warning light
Indicates a malfunction in:
• The ABS;
• The brake assist system.
Electric power steering system warning light (warning
buzzer) Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
Slip indicator light
Indicates a malfunction in:
• The VSC;
• The TRAC;
• The hill-start assist control
Page 420 of 521

5
When trouble arises
419
5-2. Steps to take in an emergency
Follow the correction procedures.
After taking the specified steps to correct the suspected problem,
check that the warning light goes off.
(Yellow) Brake system warning light
Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system
(Flashing) Cruise control indicator light
Indicates a malfunction in the cruise control system
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer)*
1
Indicates that a door is
not fully closed Check that all the doors
are closed.
SOC (State of Charge)
warning light The amount of charge
remaining in the traction
battery has fallen to the
SOC gauge’s 2 lowest
segments Charge the vehicle.
(Yellow) Plug-in indicator
Indicates a malfunction
with the charging cable. Reconnect the charging
cable.
If the warning light
does not go off even
after reconnecting the
charging cable, contact
your Toyota dealer.
Warning lightWarning light/Details
Page 421 of 521
420 5-2. Steps to take in an emergency
(Flash quickly)Charging indicator
Indicates a malfunction in
the charging system
P. 5 9
Output control warning
light (warning buzzer) EV system power avail-
able is low (due to the
amount of charge remain-
ing in the traction battery
being low, or low temper-
ature or high tempera-
ture) Charge the vehicle.
Seat belt reminder light
(warning buzzer)*
2
Warns the driver/front
passenger to fasten his/
her seat belt. Fasten the seat belt.
Master warning light A buzzer sounds and the
warning light comes on
and flashes to indicate
that the master warning
system has detected a
malfunction.
P. 4 2 7
Warning lightWarning light/DetailsCorrection procedure